It of course works if I have a copy of spbasic.bst in the same folder as my manuscript files. I would like to not have to cut and paste the .bst file into every folder I am working on. Have I put spbasic.bst in the wrong location? I thought that texhash listed the path for latex on my computer. I am running TeXShop 2.41 on a MacBook Pro with OSX 19.6.8.